The French and Indian War was fought to decide if Britain or France would be the strong power in North America. France and its colonists and Indian allies fought against Britain, its colonists and Indian allies. The war began with conflicts about land.
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The new technology that allowed the Allies to more effectively bomb the Japanese main land, was the capacity of the B-29. If we look at the other ones, we see that all that stuff already exist before the war.
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This is all dependent on your own opinion, however, I believe that electric vehicles and smart devices will last from our society. We can not give up the "easy life" that goes hand-in-hand with everything we do. We prefer an easier way of searching things and doing things, similar to the way you asked this question. Hope that helps!